(23) Search.--The same word with which the psalm opens. The inevitable scrutiny of the Divine Being is invited.

Thoughts.--As in Psalm 94:19; a word meaning (Ezekiel 31:5) branches, and so expressing the ramifications of thought.

Verse 23. - Search me, O God, and know my heart: try me, and know my thoughts. Examine me, and see if I have not represented my feelings as they really are. Keep on always searching me out (comp. ver. 1), and "trying my reins and my heart" (Psalm 26:2). My desire is to be proved and tested.

139:17-24 God's counsels concerning us and our welfare are deep, such as cannot be known. We cannot think how many mercies we have received from him. It would help to keep us in the fear of the Lord all the day long, if, when we wake in the morning, our first thoughts were of him: and how shall we admire and bless our God for his precious salvation, when we awake in the world of glory! Surely we ought not to use our members and senses, which are so curiously fashioned, as instruments of unrighteousness unto sin. But our immortal and rational souls are a still more noble work and gift of God. Yet if it were not for his precious thoughts of love to us, our reason and our living for ever would, through our sins, prove the occasion of our eternal misery. How should we then delight to meditate on God's love to sinners in Jesus Christ, the sum of which exceeds all reckoning! Sin is hated, and sinners lamented, by all who fear the Lord. Yet while we shun them we should pray for them; with God their conversion and salvation are possible. As the Lord knows us thoroughly, and we are strangers to ourselves, we should earnestly desire and pray to be searched and proved by his word and Spirit. if there be any wicked way in me, let me see it; and do thou root it out of me. The way of godliness is pleasing to God, and profitable to us; and will end in everlasting life. It is the good old way. All the saints desire to be kept and led in this way, that they may not miss it, turn out of it, or tire in it.Search me, O God, and know my heart,.... He had searched him, and knew his heart thoroughly;

try me, and know my thoughts; he had tried him, and knew every thought in him, Psalm 139:1. This therefore is not said for the sake of God; who, though he is the trier of hearts, and the searcher of the reins, is indeed a discerner of the thoughts and intents of the heart at once, and knows immediately what is in man; and needs no testimony of him, nor to make use of any means in order to know him and what is within him: but David said this for his own sake, that God would search and make known to him what was in his heart, and try him by his word, as gold is tried in the fire; or by anything difficult and self-denying, as he tried Abraham; or by any afflictive providence; or in any way he thought fit to make him acquainted thoroughly with himself. His sense is this, that if he knew his own heart and thoughts, and the inward frame and disposition of his soul, it was as he had expressed it; that he was grieved with sinners, and hated those that hated the Lord, even with a perfect hatred, and reckoned them as his enemies; but if it was otherwise, he desired to be searched and tried thoroughly, that it might be discovered: and he might say this also on account of others, who charged him falsely with things he was not conscious of; that never entered into his thoughts, and his heart knew nothing of, and could not accuse him with; and therefore he appeals to the heart searching God, that he would so lay open things that his integrity and innocence might appear to all; see Genesis 22:1.